Question

Paheli prepared a blue-coloured solution of copper sulphate in beaker A and placed an iron nail in it. Boojo prepared a yellowish-green solution of ferrous sulphate in beaker B and placed a copper wire in it. What changes will they observe in the two beakers after an hour?​

Answer 1

The metal which is more reactive displaces the metal that is less reactive from its salt solution. ​

In the reactivity order of metals:​

Iron is more reactive than copper.​

Beaker A:​

• As iron is more reactive than copper it displaces copper from blue coloured copper sulphate solution.​

• Forms a yellowish-green iron sulphate solution.​

Beaker B:​

• Copper being less reactive than iron cannot displace iron from yellowish-green iron sulphate solution.​

• No change happens.​